Overview
Natural selection is a fundamental concept in biology that explains how species evolve over time. It operates on the principle that individuals with traits better suited to their environment are more likely to survive and reproduce. This process leads to the gradual adaptation of species, as advanta...
Key Terms
Example: The thick fur of polar bears is an adaptation to cold climates.
Example: Different colors of flowers in a population of plants.
Example: Darwin's finches evolved into different species based on their feeding habits.
Example: Larger beak sizes in finches during droughts.
Example: Human birth weights tend to be around the average, as extremes are less viable.
Example: African seedcracker birds with either very large or very small beaks.
Related Topics
Key Concepts
Survival of the fittestAdaptationGenetic variationSpeciation